Wheeled scooping device



Oct. 5, 194s. w. H. DlTzLER 2,450,721

WHEELED SCOOP ING DEVICE FiledDec. 10, 1946 3 Sheets-Sheet 1 o 'o o o "z\ I d* cf r i .a u 0 Q 0 l n 2M .x N 'm "S--N Ln u Ln l i Inventor.'

r U v WALTER H. o/Tz/.nz

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WHEELED SCAOOPING DEVICE Filed Dec. 1o, 194s s sheets-sheet s Inventor WALTER H. D/TZLER Patented Oct. 5, 1948 UNITED STATES PATENT GFFICE wensten soooPrNo DEVICE Waiter n. Dialer, columbus, Neer.

sppiaaaonneeember 1o, 1946, serial No. '1153279 (ci. eff-129)- 5 Claims. 1

This invention relates to the art lof excavating, and has more particular referenceto an improved scooping device oi the two-wheeled type having a pivoted scoop which swings upwardly and rearwardly to dumping position.

The primary object of the present invention is to provide a scooping device of the above kind wherein the scoop automatically gravitates t scooping position after being dumped, and wherein power means is provided for swinging the scoop to dumping position.

A further object of the invention is to provide a novel construction of scoop and means for pivotally mounting the same, whereby Ito provide a simple and durable structure in which buckling and distortion of the scoop from twisting strains is effectively prevented.

Still another object is to provide novel and enicient power means for swinging the scoop 'to dumping position.

More specific objects and features of the invention will become apparent from the following description when considered in connection with the accompanying drawings, in which:

Figure 1 is a top plan view of a scooping device constructed in accordance with the present invention, the scoop being in scooping position.

Figure 2 is a side elevational view thereof. y

Figure 3 is a view similar to Figure 2, partly broken away and in section, and showing the scoop indumping position.

Figure 4 is a fragmentary longitudinal section taken on the line 4-4 of Figure 1.

Figure 5 is a transverse section taken `on line 5 5 of Figure 1. n

Figure 6 is a perspective view of the scoop.

Referring in detail to the drawings, the illustrated embodiment of the invention includes a suitable rigid rectangular frame 5 that may be made `of channel iron yas shown and which includes side membersprovided with forwardly converging forward extensions 6 joined at their forward ends and provided at the joined forward ends with suitable means 'I to facilitate coupling of .the same to the draw bar of' a tractor. Also, the frame may include a rear cross member pro.- vided with suitabl-e means 8 to facilitate bitching of a trailer thereto.

A transverse axle 9 is carried by aridextends across -the frame andhas ends which project out'- wardly beyond the side members of the frame. f

2; ment between a substantially verticalA rearwardly and upwardly swung dumping position Vas shown in Figure 3 and a forwardly inclined forwardly and downwardly swung scooping position asshown; in Figure 2.

The vertical center of gravity of the scoop is indicated by the dotted line a in 'Figure 3, andv it will be seen that this center of gravity is forwardly of the pivotal axis of the scoop when the latter is in dumping position, thereby causing the scoop to automatically gravitate to scooping position after being dumped.

The scoop I-I includes a substantially segmentocylindrical back wall I2 and spaced substantially parallel side and intermediate partition walls I3v and i4 respectively, which are rigidly joined to the back wall I2 by welding or the like. The scoop may -be of the scraper type as shown or of the fork or rake type. When the scoop is Vof the scraper type as shown, the back wall I2 is extended forwardly -to provide a bottom wall I5 to which the sidewalls I3 and partition walls I4 are also rigidly secured by welding or the like, said bottom wall I5 extending to the forward edges of the side walls I3 and having a blade I6 secured to the forward edge portion thereof. A' tube Il is extended through and rigidly joined to the side and partition walls I3 and I4, as by welding or thelike, and the axle 9 4is extendedl through .and freely fitted in said tube il. In this way, a scoop is provided which is of simple and durable construction, the tube Il and partition wall I4 effectively bracing the body of the scoop against buckling or becoming distorted from twisting strains. The

axis of curvature of the back wall I2 is indicated at b in Figure 2, and it will be noted that the pivotal axis, of the scoop afforded bythe axle 9 and tube I'I is located at an eccentric point which is. below and rearwardly of the axis of curvature b grof theback wal-l I2, when the scoop is in scoopscoop to scooping position, and this means may consist of substantially vertically adjustable hook members I8 attached to the outer sides ofthe side wall-s I3 near the front ends of the lat'ter and dis-` 31 at a pointy which permits effective complete dumping of? the. scoop when the latter is- 'swung to a substantially vertical or slightly rearwardly inclined upright position as shown in Figure 3. It will be particularly noted that the scoop does not turn completely over or disturb the relationship of the wheels l with the ground as is the case with scoops which turn downwardly and rearwardly to dump. Also, no latching means is required to arrest and hold the scoop in the desired position.

Power means is provided for swinging the scoop to dumping position. As shown, this means includes a hydraulic jack I9. disposed longitudinally of and at each side of the scoop and operatively connected to the latter. While this arrangement is preferred, it will be apparent that either jack may be dispensed with and only one jack employed. Each jack includes a cylinder 2@ pivotally mounted at its forward end on the frame 5 as at 2| for vertical swinging movement, and a rearwardly projectable piston rod 22. A link 23 is pivoted at one end on the adjacent side wall I3 at a point 24 which is forwardly of the pivotal axis of the scoop when the latter is in scooping position. This link extends upwardly and is pivoted at its other end as at 25 to the associate-d piston rod 22. .A projection 26 is provided on the adjacent side of the scoop at the rear side of and in the path of the associated link 23. Thus, dumping of the scoop is initiated by rearward pressure of the link 23 against the associated projection 26, and is completed by a rearward pull exerted on said link by the associated piston rod 22. This will be appreciated by a comparison of Figure 2 in which the scoop is in scooping position and the dotted and full 'line positions of the scoop in Figure 3. When the rod 22 is projected rearwardly it swings the link 23 in a like direction, forcing it against the associated projection 26 and causing the scoop to swing upwardly and rearwardly until it reaches substantially the dotted line position of Figure 3. Continued projection of the rod 22 causes a rearward pull to be exerted thereby upon the link 23 until the rod 22 reaches its fully projected position shown by full lines in Figure 3. Naturally, when the rod 22 is fully projected, it prevents any further rearward swinging movement of the scoop, and it will be noted that just before the link 23 and rod 22 reach the full line position of Figure 3, the -projection 26 moves a slight distance downwardly away from the link 23. Fluid under pressure may be derived from a suitable source on the tractor by means of which the present device is drawn ahead, such fluid under pressure being conducted to the forward end ofA the cylinder 2B of each jack by a pipe or line 21 having branches extending to the respective jack cylinders. The supply and exhaust of the pressure fluid may be suitably controlled by means on the tractor, and a coupling may be provided in the line 21 to permit uncoupling or coupling of the scooping device with respect to the tractor. When the pressure liuid is exhausted from the line 2T in any suitable manner, the scoop H will gravitate to its scooping position from the dumping position thereof in Figure 3, for the reason previously explained, the rod 22 moving forwardly within the associated cylinder 2B and the Vlink 23 being swung forwardly to the position of Figure 2. As the scoop reaches its scooping position,v the pin 2B will engage the link 23 so that the parts are positioned for the next dumping operation. The scooping position of the scoop is determined by the position of the 4 hooks i8 or the time at which the latter engage the frame 5, such position being also determined by engagement of projection 26 with the associated link 23.

From the foregoing description, it is believed that the construction, operation and advantages of the present invention will be readily understood and appreciated by those skilled in the art. Modifications and changes in construction are contemplated, such as fairly fall within the scope of the invention as claimed.

What I claim is:

1. A scooping device of the character described comprising a frame having means to facilitate coupling of the same to the draw bar of a tractor, a transverse axle carried by and extending across the frame and having ends projecting outwardly beyond the sides of said frame, supporting wheels journaled on the projecting ends of the axle, a scoop pivoted above the' bottom and near the back thereof on the axle and within the frame for movement between a substantial vertical rearwardly and upwardly swung dumping position and a forwardly inclined forwardly and downwardly swung scooping position, and power means for swinging said scoop to dumping position, said scoop including a substantially segmento-cylindrical back wall and spaced substantially parallel side and intermediate partition walls rigidly joined to said back wall, and a tube extending through and rigidly joined to said side and partition walls, said axle being extended through and freely fitted in said tube.

2. A scooping ldevice of the character described comprising a frame having means to facilitate coupling of the same to the draw bar of a tractor, a transverse axle carried by and extending across the frame and having ends projecting outwardly beyond the sides of said frame, supporting wheels journaled on the projecting ends of the axle, a scoop pivoted above the bottom and near the back thereof on the axle and within the frame for movement between a substantial vertical rearwardly and upwardly swung dumping position and a forwardly inclined forwardly and downwardly swung scooping position, and power means for swinging said scoop to dumping position, said power means including a hydraulic jack pivotally mounted for vertical swinging movement longitudinally of and at one side of the scoop and including a rearwardly projectable piston rod, and means operatively connecting said piston rod to the adjacent side of the scoop, said last named means including a link pivoted at one end to the adjacent side of the scoop and at the other end to said piston rod, and a projection carried by the adjacent side of the scoop and arranged in the path of said link.

3. A scooping device of the character described comprising a frame having means to facilitate coupling of the same to the draw bar of a trac tor, a transverse axle carried by and extending across the frame and having ends projecting outwardly beyond the sides of said frame, sup-l porting wheels journaled on the projecting ends of the axle, a scoop pivoted above the bottom and near the back thereof on the axle and within the frame for movement between a substantially vertical rearwardly and upwardly swung dumping position and a forwardly inclined forwardly and downwardly swung scooping position, power means for swinging said scoop to dumping position, said scoop including a substantially segmento-cylindrical back wall and spaced substantially parallel side and intermediate partition walls rigidly joined to said back wall, and a tube extending through and rigidly joined to said side and partition walls, said axle being extended through and freely Ifitted in said tube, said tube outwardly beyond the sides of said frame, supporting wheels journaled on the projecting ends of the axle, a scoop pivoted above the bottom and near the back thereof on the axle and within the frame for movement between a substantial vertical rearwardly and upwardly swung dumping position and a forwardly inclined forwardly and downwardly swung scooping position, and power means for swinging said scoop to dumping position including a hydraulic jack having a cylinder pivotally mounted at its forward end on the frame beside the scoop and a rearwardly projectable piston rod, a link pivote-d at one end on the side of the scoop at a point which is forwardly of the pivotal axis of the scoop when the latter vis in scooping position, the link extending upwardly and being pivoted at its other end to said piston rod, and a projection on the side of the scoop at the rear side of and in the path of said link.

5. A scooping device of the character described comprising a frame having means to facilitate coupling of the same to the ldraw bar of a tractor, a transverse axle carried by and extending across the frame and having ends projecting outwardly beyond the sides of said frame, supporting wheels journaled on the projecting ends of theaxle, a scoop pivoted above the bottom and near the bac-k thereof on the axle and within the frame for movement between a substantial vertical rearwardly and upwardly swung dumping position and a forwardly inclined forwardly and downwardly swung scooping position, power means for swinging said scoop to dumping position including a hydraulic jack having a cylinder pivotally mounted at its forward end on the frame beside the scoop and a rearwardly projectable piston rod, a link pivoted at one end on the side of the scoop at a point which is forwardly of the pivotal axis of the scoop when the latter is in scooping position, the link extending upwardly and being pivoted at its other end. to said piston rod, and a projection on the side of the scoop at the rear side of and in the path of said link, whereby dumping of the scoop is initiated by rearward pressure of the link against said projection and is completed by a rearward pull exerted on said link by said piston rod.

WALTER H. DITZLER.

REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS Number Name Date 78,999 Post June 16, 1868 111,165 Babbit Jan.- 24, 1871 244,698 Wallis et al July 19, 1881 1,363,346 Pilger Deo. 28, 1920 1,811,030 Shaw Juie 23, 4931 2,159,438 Le Bleu May 23, 1939 2,203,615 Curries June 4, 1940 

